Sounds above 80 decibels (dB, a measurement of the loudness or strength of sound vibration) may cause vibration intense enough to damage the inner ear, especially if the sound continues for a long time.

In the U.S., the maximum job noise exposure is regulated by law. Both the length of exposure and decibel level are considered. If the sound is at or greater than the maximum levels recommended, protective measures are required.

Symptoms

The main symptom is partial or complete hearing loss. The hearing loss will likely get worse over time with continued exposure.